Well, if it were all about the chips, then I'd simply buy unchipped
carts and paste Epson chips onto them. As I understand it, Epson has
no control over what we do with their chips after we've bought them.
Chris Hargens
--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Bob Frost"
<bob@...> wrote:
>
> Keith,
>
> > Bob, even you have to admit that the chip is not an innovation in any
> > sense or intent than in that of preventing 3rd-party ink sales and
> > forcing the use of EPSON consumables.
>
> "Even you" indeed! Trouble is that I doubt if any of us know what
was in the
> mind of the person who had the idea of storing some info on a chip
on the
> cart. Maybe it was as you suggest; maybe it wasn't. Maybe he/her
thought
> they could 'kill two birds with one stone'.
>
> From what little I know about the functioning of the chip and
printer (from
> reading service manuals etc), the chip does do several useful
things - such
> as:-
>
> - storing the ink usage of that particular cart, so that you can
swap carts
> and still have the ink usage remembered when you put it back, and
you can
> even use the same cart in two printers of the same type and have
everything
> remembered properly.
>
> - storing the date of manufacture and reminding you when it is past
it's
> use-by date (never had this happen yet)
>
> - rather importantly, it also tells the printer whether it is a
photo-black
> or matte black cart in printers where they are alternatives in the same
> slot. This info is not only needed to set the paper and resolution
> alternatives in the driver, but also to delay the paper eject if
using matte
> ink which dries more slowly than photo black.
>
> - by checking the data on the cart at startup, the printer determines
> whether it is the same cart or a different cart (from that in place at
> shutdown) , and sets the appropriate cleaning cycles (CL or CL3)
>
> - the chip also tells the printer if it is a new cart and thus needs a
> filling cycle, rather than a cleaning cycle.
>
> - the number of cleaning cycles is also stored on the cart, so that ink
> usage can be calculated properly. Since carts are all swapped in and
out at
> different times, this is cart-specific info.
>
>
>
> There are probably other functions, but I'm sure that if I was
designing a
> printer and cartridge system with swappable carts, having some info
stored
> on each cart would be an inevitable thought on my part just from the
point
> of making the setup work efficiently, accurately, and be as
idiot-proof as
> possible.
>
> But there are always 'conspiracy theorists' who see conspiracies in
everyone
> else's actions. For instance, the different carts in a printer all have
> different plastic knobs on that fit or don't fit into the
appropriate slot
> for that cart. Stops idiots fitting carts in the wrong slots, which
I have
> seen happen, but I'm sure a conspiracy theorist would say that was
invented
Show quoted textHide quoted text
> to make like more difficult for 3rdparty cart manufacturers!
>
> Enough of this; back to my photos!
>
> Bob Frost.
>
>
> ----- Original Message -----
> From: "Editor P.O.V. Image Service" <editor@...>
>